Question

According to Freundlich adsorption isotherm, the amount
of gas adsorbed at very high pressure
(a) reaches a constant limiting value
(b) goes on increasing with pressure
(c) goes on decreasing with pressure
(d) increase first and decreases later with pressure

Answer 1

hey mate

According to Freundlich adsorption isotherm, the amount

of gas adsorbed at very high pressure

(a) reaches a constant limiting value

(b) goes on increasing with pressure✔

(c) goes on decreasing with pressure

(d) increase first and decreases later with pressure

Answer 2

According to Freundlich adsorption isotherm, the amount of gas adsorbed at very high pressure reaches a constant limiting value. Option (a) is the correct choice.

1) Freundlich Langmuir's isotherm mainly works on the chemical adosrption which fails when the limiting value of the pressure reaches a very high value.

2) Langmuir's model consists of many active adsorption sites where the isotherms can interact.

3) It fails at a high pressure because mass adsorbed reaches a constant limiting value when a layer of gas, mainly unimolecular covers the adsorbed surface.